IDS Forum

Re: onstat -g iof

Posted By: Fernando Nunes
Date: Thursday, 27 May 2010, at 7:20 p.m.

In Response To: Re: onstat -g iof (Art Kagel)

Which is what I understand from the manual, although it's not very explicit.
Again, this is I/O operations, and it can be greatly influenced by hardware
caches.

Regards.

On Thu, May 27, 2010 at 11:49 PM, Art Kagel <art.kagel@gmail.com> wrote:

> Someone from the Labs (maybe Scott Lashley, maybe John Miller III) told me
> once that the io/s is calculated as a rolling value that's only updated
> when
> there is actual IO being performed. The exact mechanics of how the engine
> implements that calculation I don't know, but it would be something like
> storing the total time spent performing IO divided in to the number of IOs
> not elapsed clock time since startup or since stats were zero'd.
>
> Art
>
> Art S. Kagel
> Advanced DataTools (www.advancedatatools.com)
> IIUG Board of Directors (art@iiug.org)
>
> Disclaimer: Please keep in mind that my own opinions are my own opinions
> and
> do not reflect on my employer, Advanced DataTools, the IIUG, nor any other
> organization with which I am associated either explicitly, implicitly, or
> by
> inference. Neither do those opinions reflect those of other individuals
> affiliated with any entity with which I am affiliated nor those of the
> entities themselves.
>
> On Thu, May 27, 2010 at 5:26 PM, ROBERT CLOW <robert@clow.biz> wrote:
>
> > Thanks again but I do not believe that the manual is correct
> >
> > onstat taken at 04:00
> >
> > 32 data_part_02_02 3899850752 952112 52940800 12925 660.4
> >
> > op type count avg. time
> >
> > seeks 0 N/A
> >
> > reads 0 N/A
> >
> > writes 0 N/A
> >
> > kaio_reads 259790 0.0013
> >
> > kaio_writes 921 0.0605
> >
> > And at 08:00
> >
> > 32 data_part_02_02 3931705344 959889 69881856 17061 643.1
> >
> > op type count avg. time
> >
> > seeks 0 N/A
> >
> > reads 0 N/A
> >
> > writes 0 N/A
> >
> > kaio_reads 260172 0.0013
> >
> > kaio_writes 1192 0.0530
> >
> > as can be seen 660.4 io/s at 04:00 and 643.1 at 08:00 This looks like it
> is
> > the io/s during some time window - don't know if maximum or average -
> looks
> > like maximum..
> >
> > So still trying to fully understand what I am seeing
> >
> >
> >
> >
>
> *******************************************************************************
> > Forum Note: Use "Reply" to post a response in the discussion forum.
> >
> >
>
> --00504502cc915bd0c304879b33d4
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--
Fernando Nunes
Portugal

http://informix-technology.blogspot.com
My email works... but I don't check it frequently...

--0016367f9eee53ab0004879ba4a5

Messages In This Thread

• onstat -g iof
  ROBERT CLOW -- Thursday, 27 May 2010, at 8:32 a.m.
  • Re: onstat -g iof
    Fernando Nunes -- Thursday, 27 May 2010, at 8:41 a.m.
    • Re: onstat -g iof
      ROBERT CLOW -- Thursday, 27 May 2010, at 10:30 a.m.
      • Re: onstat -g iof
        Fernando Nunes -- Thursday, 27 May 2010, at 11:10 a.m.
        • Re: onstat -g iof
          ROBERT CLOW -- Thursday, 27 May 2010, at 5:26 p.m.
          • Re: onstat -g iof
            Fernando Nunes -- Thursday, 27 May 2010, at 5:43 p.m.
          • Re: onstat -g iof
            Art Kagel -- Thursday, 27 May 2010, at 6:49 p.m.
            • Re: onstat -g iof
              Fernando Nunes -- Thursday, 27 May 2010, at 7:20 p.m.
              • Re: onstat -g iof
                John Miller iii -- Saturday, 29 May 2010, at 5:47 a.m.
                • Re: onstat -g iof
                  ROBERT CLOW -- Monday, 31 May 2010, at 1:06 a.m.

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